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United States Patent | 5,760,377 |
Zelenjuk ,   et al. | June 2, 1998 |
A heating element of an electric heater comprising an envelope, having a mass M.sub.o and a surface with an area S.sub.o, and a heater in the form of an electrically insulated heating wire, said wire being disposed in said envelope and having a mass M.sub.H and a surface with an area S.sub.H. The mass and the surface area of the heating wire and the mass and the surface area of the envelope are related by the relationships 0.1<M.sub.H /(.lambda.M.sub.o)<0.3 and 0.8<S.sub.H /S.sub.o <0.9 where .lambda. denotes the coefficient of heat transfer of the material of the envelope.
Inventors: | Zelenjuk; Jury Iosifovich (ulitsa Vokzalnaya, 5, kv. 232, Ryazan, RU); Peskov; Nikolai Evgenievich (ulitsa Kultury, 10/11, kv.2, Ryazan, RU); Piletsky; Gennady Konstantinovich (ulitsa Dzerzhinskogo, 24/1, kv,20, Ryazan, RU); Stroev; Evgeny Alexeevich (ulitsa Mayakovskogo, 22, kv.24, Ryazan, RU) |
Appl. No.: | 505224 |
Filed: | August 14, 1995 |
PCT Filed: | December 14, 1993 |
PCT NO: | PCT/RU93/00301 |
371 Date: | August 14, 1995 |
102(e) Date: | August 14, 1995 |
PCT PUB.NO.: | WO95/16414 |
PCT PUB. Date: | June 22, 1995 |
Current U.S. Class: | 219/544; 219/553 |
Intern'l Class: | H05B 003/44; H05B 003/10 |
Field of Search: | 219/538,542,544,546,548,549,552,553,528,211,457,464 |
3524965 | Aug., 1970 | Arron. | |
3904850 | Sep., 1975 | Johnson | 219/544. |
4063069 | Dec., 1977 | Peeri. | |
4455481 | Jun., 1984 | Van Hoof et al. | 219/522. |
4628188 | Dec., 1986 | Andreason | 219/528. |
4665308 | May., 1987 | Courvoisier et al. | 219/544. |
4954676 | Sep., 1990 | Rankin | 219/528. |
4983814 | Jan., 1991 | Ohgushi et al. | 219/544. |
Foreign Patent Documents | |||
1038891 | ., 0000 | GB. | |
2141029 | ., 0000 | GB. | |
1053170 | ., 0000 | GB. |